British actress Andrea Riseborough's surprise Oscar nomination has sparked debate in Hollywood

Many awards watchers were surprised when Riseborough was nominated for best actress last week for her performance in To Leslie. Not because she didn't deserve it (on the contrary), but because of how unusual this was for an actress who had practically no previous nominations.
The Newcastle-born actress plays an alcoholic mother who squanders her lottery winnings in the critically acclaimed but little-known film.
But did the campaign that defended him break any rules?
According to the BBC, it has been the famous names of the cinema, such as Gwyneth Paltrow, Edward Norton and Courteney Cox who have supported Riseborough in the last days before the Oscar vote.
Although the stars' efforts were ultimately successful, questions have been raised about how Riseborough's nomination was achieved and whether some of those campaigning for it broke any rules.
The Academy's Board of Governors have said the issue will be on the agenda at their next meeting on Tuesday (January 31), after much controversy over the actress' involvement.
Oscar nominees generally have expensive campaigns behind them, usually funded by their film's studio, but "To Leslie," which earned $27,000, was more celebrity-backed.